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<h1><a href="genomics_v1beta2.html">Genomics API</a> . <a href="genomics_v1beta2.reads.html">reads</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="#search">search(body)</a></code></p>
<p class="firstline">Gets a list of reads for one or more read group sets. Reads search operates over a genomic coordinate space of reference sequence & position defined over the reference sequences to which the requested read group sets are aligned.</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="search">search(body)</code>
  <pre>Gets a list of reads for one or more read group sets. Reads search operates over a genomic coordinate space of reference sequence & position defined over the reference sequences to which the requested read group sets are aligned.

If a target positional range is specified, search returns all reads whose alignment to the reference genome overlap the range. A query which specifies only read group set IDs yields all reads in those read group sets, including unmapped reads.

All reads returned (including reads on subsequent pages) are ordered by genomic coordinate (reference sequence & position). Reads with equivalent genomic coordinates are returned in a deterministic order.

Implements GlobalAllianceApi.searchReads.

Args:
  body: object, The request body. (required)
    The object takes the form of:

{ # The read search request.
    "readGroupSetIds": [ # The IDs of the read groups sets within which to search for reads. All specified read group sets must be aligned against a common set of reference sequences; this defines the genomic coordinates for the query. Must specify one of readGroupSetIds or readGroupIds.
      "A String",
    ],
    "readGroupIds": [ # The IDs of the read groups within which to search for reads. All specified read groups must belong to the same read group sets. Must specify one of readGroupSetIds or readGroupIds.
      "A String",
    ],
    "pageSize": 42, # Specifies number of results to return in a single page. If unspecified, it will default to 256. The maximum value is 2048.
    "start": "A String", # The start position of the range on the reference, 0-based inclusive. If specified, referenceName must also be specified.
    "pageToken": "A String", # The continuation token, which is used to page through large result sets. To get the next page of results, set this parameter to the value of nextPageToken from the previous response.
    "referenceName": "A String", # The reference sequence name, for example chr1, 1, or chrX. If set to *, only unmapped reads are returned.
    "end": "A String", # The end position of the range on the reference, 0-based exclusive. If specified, referenceName must also be specified.
  }


Returns:
  An object of the form:

    { # The read search response.
    "nextPageToken": "A String", # The continuation token, which is used to page through large result sets. Provide this value in a subsequent request to return the next page of results. This field will be empty if there aren't any additional results.
    "alignments": [ # The list of matching alignments sorted by mapped genomic coordinate, if any, ascending in position within the same reference. Unmapped reads, which have no position, are returned last and are further sorted in ascending lexicographic order by fragment name.
      { # A read alignment describes a linear alignment of a string of DNA to a reference sequence, in addition to metadata about the fragment (the molecule of DNA sequenced) and the read (the bases which were read by the sequencer). A read is equivalent to a line in a SAM file. A read belongs to exactly one read group and exactly one read group set. Generating a reference-aligned sequence string When interacting with mapped reads, it's often useful to produce a string representing the local alignment of the read to reference. The following pseudocode demonstrates one way of doing this:
          # out = "" offset = 0 for c in read.alignment.cigar { switch c.operation { case "ALIGNMENT_MATCH", "SEQUENCE_MATCH", "SEQUENCE_MISMATCH": out += read.alignedSequence[offset:offset+c.operationLength] offset += c.operationLength break case "CLIP_SOFT", "INSERT": offset += c.operationLength break case "PAD": out += repeat("*", c.operationLength) break case "DELETE": out += repeat("-", c.operationLength) break case "SKIP": out += repeat(" ", c.operationLength) break case "CLIP_HARD": break } } return out
          # Converting to SAM's CIGAR string The following pseudocode generates a SAM CIGAR string from the cigar field. Note that this is a lossy conversion (cigar.referenceSequence is lost).
          # cigarMap = { "ALIGNMENT_MATCH": "M", "INSERT": "I", "DELETE": "D", "SKIP": "N", "CLIP_SOFT": "S", "CLIP_HARD": "H", "PAD": "P", "SEQUENCE_MATCH": "=", "SEQUENCE_MISMATCH": "X", } cigarStr = "" for c in read.alignment.cigar { cigarStr += c.operationLength + cigarMap[c.operation] } return cigarStr
        "info": { # A map of additional read alignment information.
          "a_key": [ # A string which maps to an array of values.
            "A String",
          ],
        },
        "duplicateFragment": True or False, # The fragment is a PCR or optical duplicate (SAM flag 0x400)
        "readGroupSetId": "A String", # The ID of the read group set this read belongs to. (Every read must belong to exactly one read group set.)
        "alignedQuality": [ # The quality of the read sequence contained in this alignment record. alignedSequence and alignedQuality may be shorter than the full read sequence and quality. This will occur if the alignment is part of a chimeric alignment, or if the read was trimmed. When this occurs, the CIGAR for this read will begin/end with a hard clip operator that will indicate the length of the excised sequence.
          42,
        ],
        "failedVendorQualityChecks": True or False, # SAM flag 0x200
        "fragmentName": "A String", # The fragment name. Equivalent to QNAME (query template name) in SAM.
        "readNumber": 42, # The read number in sequencing. 0-based and less than numberReads. This field replaces SAM flag 0x40 and 0x80.
        "properPlacement": True or False, # The orientation and the distance between reads from the fragment are consistent with the sequencing protocol (SAM flag 0x2)
        "nextMatePosition": { # An abstraction for referring to a genomic position, in relation to some already known reference. For now, represents a genomic position as a reference name, a base number on that reference (0-based), and a determination of forward or reverse strand. # The mapping of the primary alignment of the (readNumber+1)%numberReads read in the fragment. It replaces mate position and mate strand in SAM.
          "position": "A String", # The 0-based offset from the start of the forward strand for that reference.
          "reverseStrand": True or False, # Whether this position is on the reverse strand, as opposed to the forward strand.
          "referenceName": "A String", # The name of the reference in whatever reference set is being used.
        },
        "supplementaryAlignment": True or False, # Whether this alignment is supplementary. Equivalent to SAM flag 0x800. Supplementary alignments are used in the representation of a chimeric alignment. In a chimeric alignment, a read is split into multiple linear alignments that map to different reference contigs. The first linear alignment in the read will be designated as the representative alignment; the remaining linear alignments will be designated as supplementary alignments. These alignments may have different mapping quality scores. In each linear alignment in a chimeric alignment, the read will be hard clipped. The alignedSequence and alignedQuality fields in the alignment record will only represent the bases for its respective linear alignment.
        "numberReads": 42, # The number of reads in the fragment (extension to SAM flag 0x1).
        "fragmentLength": 42, # The observed length of the fragment, equivalent to TLEN in SAM.
        "secondaryAlignment": True or False, # Whether this alignment is secondary. Equivalent to SAM flag 0x100. A secondary alignment represents an alternative to the primary alignment for this read. Aligners may return secondary alignments if a read can map ambiguously to multiple coordinates in the genome. By convention, each read has one and only one alignment where both secondaryAlignment and supplementaryAlignment are false.
        "alignedSequence": "A String", # The bases of the read sequence contained in this alignment record, without CIGAR operations applied. alignedSequence and alignedQuality may be shorter than the full read sequence and quality. This will occur if the alignment is part of a chimeric alignment, or if the read was trimmed. When this occurs, the CIGAR for this read will begin/end with a hard clip operator that will indicate the length of the excised sequence.
        "id": "A String", # The unique ID for this read. This is a generated unique ID, not to be confused with fragmentName.
        "alignment": { # A linear alignment can be represented by one CIGAR string. Describes the mapped position and local alignment of the read to the reference. # The linear alignment for this alignment record. This field will be null if the read is unmapped.
          "position": { # An abstraction for referring to a genomic position, in relation to some already known reference. For now, represents a genomic position as a reference name, a base number on that reference (0-based), and a determination of forward or reverse strand. # The position of this alignment.
            "position": "A String", # The 0-based offset from the start of the forward strand for that reference.
            "reverseStrand": True or False, # Whether this position is on the reverse strand, as opposed to the forward strand.
            "referenceName": "A String", # The name of the reference in whatever reference set is being used.
          },
          "cigar": [ # Represents the local alignment of this sequence (alignment matches, indels, etc) against the reference.
            { # A single CIGAR operation.
              "referenceSequence": "A String", # referenceSequence is only used at mismatches (SEQUENCE_MISMATCH) and deletions (DELETE). Filling this field replaces SAM's MD tag. If the relevant information is not available, this field is unset.
              "operation": "A String",
              "operationLength": "A String", # The number of bases that the operation runs for. Required.
            },
          ],
          "mappingQuality": 42, # The mapping quality of this alignment. Represents how likely the read maps to this position as opposed to other locations.
        },
        "readGroupId": "A String", # The ID of the read group this read belongs to. (Every read must belong to exactly one read group.)
      },
    ],
  }</pre>
</div>

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